watkins



C. w. whims.

RAILWAY BRAKE. APPLICATION F1LEDJUNE25,19I9.

Lf. Mmm Nov. 25, 19195 y 2 SHEETS-SHEET i c. WWAIKINS.

RAILWAY BRAKE.

APPLICATION FILED IUNEZS, I9|9. 1,322,852. y Patented Nov. 25, 1919.

2 SHEETS-SHEET 2.

Guam

iov .ments in b rdkes for railroad cars-:indimerel-ation nioie'particu'lerly. to ajbrdlge cially adapted'for` use in 'connectioiifwith I RAILWAYABMKE.

CHARLES WALTER' WTKINS, 0F DOER'AN'CETCN',i PENNSYLVANIA.

Specification 'ot Letters Patent.

. Patented Neves, 1919'.

" eminem@ med :une as. isis. smal no 306,634'.

To all whom it may concern:

Be it known that I, CHAiuns W. WAT- iiiNs, citizen ,ci the UnitedStates, residing at Dorranceton,` in, the county of liuzerne and State of Pennsylvanie, have-'invented certain new' and useful Improvements-in'. Railway-Brakes, of which 'the 'following is a specification, reference being had -to the ecoompnnyiiig drawings. 'li- This invention relates to' certain iipro'vee mine car, lleasure' caror-thetfilie ltriiwling by greviiy; and it in en` object of the invention toffprovide, power operated means for frictionelly engagingv the xle or axles of afcarto ietardit's' movement'so thahthe use is dispensed with of sprugs or snubs and whereby speed of the cnifina'y lie/retarded or the car lbrought to a stop Withouty a. suddenshock or bump which would otherwise impose excessive weer and tearnpon-the cnr.

lt is also en object of thednvention to .provide e novel improvedbrake of this geni `Fi .z2 is eview in topA plan of understood, I'will--now proceed to describe the`san1e' with reference to thev :iccompaiiyu 56 mjriiwi'ngs, wherein: v

igure 1- is n vi vv partly in longitudinal section and partly in elevation' illustrating a railway 'brake constructed in' accordance- I 60 with an'. embodiment of iny invention. a een being 'diagrammeticoglly'indicated v hefstruci4 `'ture illustrated in'Fig4-"1f with'the cerfand thejregulating valveloniitted,

. Fig.` 4 an enlarged fragmentary 'view lllustratn 'means as artly-,in section andpartlyin elevetionl- .illustrating adjacent ties and the butts -or eral character including e skid s up orted for vertical swinging movement en' operate' by fluid pressure to have frictiona-l engagement ,with i e car .-to lretird the movementr thereof. l

Another object of the invention is to provide a novel improved device of this gen'- ernl character-'including n vertically movable skidtogether with e hiid oerated-pis-d ton operatively engegedgwlth-t imposin iiinove'iiie'nt the'skid in a direction to rictionally en agen cer,A together with nieens'whereby t emovementof the piston is cushioned 1n order to prolog the sibility of injury thereto.-

timbers interposed therebetweeni 'f Fig. 6 is a. 'fragmentary' view partly in 'i' section andpartly in elevation illustrating. the regulating valve as'herein employed: As disclosed in 'the eccompenying dr-mw ings, T denotes the cross ties of a track structure upon which are rested 'the railsR 'over whicha. mine car,'a pleasure car or 'other unit of rollingstock. is ede' tedA to' travel.

. Mounted upon adjacent ties 'substantially iindway betweenthe lrails R is en upstandmg block B having its opposite ends beveled 'as at 1 sothut thecoupliiigs-carried by the rolling 'stock may drag thereover Withoutv catching.

'The block B serves as a journal for the shaft '2 disposed transversely therethrough' f ndjextendingheyond opposite sides thereconstruction and in the coinbinetion end eL-ifl rangement of the several parts ofniy proved'lnnke whereby certain' importent.' advantages. nre attained and the device re n-' dered simpler, less expensive and otherwisemore convenient and 'advantageous for use,

of. iSecuredfto each extended portion of the shaft -Zis iiii'elongeted skid S. The'fslifid S A .posed along its upper or working edge or g ...fece .rnilvplate 3 of metal. The .skid Sis The invention consists m-'therdetails .oiiis lis preferably formed of -wood and has dislife of the device' and to\ininiinize the'pos- .l

also airnn'ged. substntielly in parallelism of the car for-rolling stock so that when the end portion' of the skid remote from the, block Bfis-reised or elevated, the skid S Will have frictional contact with the axle A of the ear C whereby the-speed of thecer is 'retarded without the necessity of spregging,

'snubbin or blocking s is now generally done an perticnlerlyv i. "m Fig. 5'is afrngmentry view in, top plan-i v1 itv gaged with apistou 7 reciprocating within said adjacent ties.;

l cushion formed between said piston-7 nud Athe upper head 8 whereby thepiston tion. the vair cushion is formed' through ythe 7 and closing in the upward stroke.

, -cylmder- 8 will 'be released and the skid S ing the axles Auand prefer I5A substantially in the forni ot an inverted- U.' The "coupling member 5 straddlcs the cylinder 8 is y raised skid S.

1 raise the skid S the lever 15 is thrown into a position to perruit the unobstructed flow Depending from the free or working end portion of the skid S is apair of transversely spaced ears 4 between-which is'pivotally enraged the base portion ofa coupling member.

tion substantially one-half inc-h below such axles.

In order to prevent the piston `7 from striking the lower head of the cylinder 8 I' find it of advantage to provide upon vthe ripper surface of one of the ties T and beupper or'outer end ortionof .the piston rod low the skid S a himmel' or buffer 16 formed 6 with its side mem rs a pivotally. engaged of yielding malerat'and preferably rubber. with the pistonrod 6. The piston rod G s This bull'er :rr-'bumper lli serves to cushion mounted-for rectilineal movement and tire' -the weight of the skid S. and the parts con- Coupling member compensatcs for the i'eq`-'-- comitant thereto. uisite Swinging movement of the skid S .The speed of theaipward stroke of the without throwingl the rod '6 out of plumb ,'piston 7 will be in prfmortion to the pressure andwhiclris readily permitted 'because the of the fluid and to the area. of the fluid instroke ofthe rod 6 is short. let of the cylinder S. In some cases the he inner or lower' end of the rod 6'is endownward strokel ol the pistou 7 under the I influence or' the weight. ofthe car Vu Jon. the The-upper head 8" of the skid S will raise the pressure within the provided with a stuiiing box" cylinder above the inlet pressure and in this 9 through which the r'od 6 travels so that case the extra [ncssure will fiow or be forced leakagels avoided.: back in the lineA 1Q. In the. event the com-A The head 8 is also preferably rectangular' pression von the u pward. stroke of the pisin plauso that the corners 8? thereof alford' ton 7 becomes too high for proper'ection I outwe'rdlyand laterally extending flanges wherebyfthe cylinder may be engaged 'with to reduce ich excessive compression. and supported lbetween adjacent ties' T and' The .working end portionsof the skids S the'butt y,ortiinbers' 10 interposed between are connected by a cross member 18 having secured to its upper surface a buffer or cushion 18 formed otyielding material, preferably rubben. und this cushion or' buffer 19 is adapted to engage upon upward movement of the skids S, the rigid member 2O is extending over said cross member 18 and prevented' from striking said head 8 with supported by adjacent'tics T. In practice force und particularly upon sudden release xthe buffer or cushion 19 commences to oomof the weight of the rolling stock upon the' pressbetween one-qunrtcr and one-half inch before the piston 7 reaches the limit of its a cylinder 8.

In practice the piston 7 has a stroke of about four inchesandthe upward 'stroke of the piston 7 is under control of an air In the present embodiment of my inven' aid is ,given to the desired compression.

instrumentality of the check-valve 11 open- The. member il() is of a length substantially ing on the downward stroke of the piston.

In so that said member also serves as a guide other words, ,as .the iston 7 moves downwardly the cheekvalve l11 opens to admit air within the e linder and when Ithe piston 7 is move u war ly air within the cylinder 8 above t e pistonjs compressed to aiord the desired cus ion, In c ommuncation with-'the lower rtion of the cylinlateral movement and thereby maintained in desired nlinexnent. It will also be understood that the area of the inlet for tle fluid within the cylinder 8 can be increased for decreased to give more compression and greaterpressure, together-with quicker acder 8 and below the piston 7 is a pipeline-tion or vice ver a and it isralso to be unl miv v under pressure and which fluid may be air, i too high a reducing valve Snot shown) of- 12 leadingr from a. suitable source of fluid derstood that \.'hen the pressure may be water or steam. Interposed within the pi e line 12 is a three-way valve14.wherein t e plug-is operated through the medium of the thought to be obvious that a, brake conupstandinrr lever l5. When it is desired to structed in accordance with my invention is particularly well adapted for use b reason ,of the convenience and facility rwid7 of the fluid under ressure within the cylinit may be assembled andA operated and it der 8 and upon a justing the lever l'into will also be obvious that myinvention is a second position the pressure. within the susceptible of some change-@and lnodifioa-v tion without departing from the principles and spirit thereof and for this reason .I do not Wish to be understood as limiting any desired type may Abe emp oyed.

will lower by. gravity to a Eosition cleara ly at a posiprovide il?i air cup i7 which may be setv equal to the distance between the skids Sj 1 which upward movement and whereby a, further whereby the skids S are held against undue From the foregoing description, it is y `1 myself to the precise arrangement and for-v 1. A deviceof the character ,describedl y. lcomprising a skid supported for vertical swinging movement, a cylinder, a piston Imovable within the cylinder and operatively engaged with the skid, and means for admitting fluid pressure to the cylinder for moving the piston in a direction to elevate the skld, said cylinder being provided with means for producing an air cushion Within the cylinder in advance of the piston when vsaid moves in a direction to elevate 2. In combination with thev rails of a i trackway, a block positioned therebetween and having its opposite ends beveled, a shaft journaled in said block, a skid extending lngitudinally of the trackway and having an end| portion fixed to the shaft, and fluid operated means for imparting` upward swinging movement to the skid.

3. A device of the character described comprising a skid .supported for vertical swinging movement and adapted to fric-` tionally engage a car when elevated, fluid operated means foi` elevating'theskid, and means coacting with the skid for limiting its upward movement andl for holding the skid against lateralA movement.

4. 'In combination with the -rals of a trackway, a block positioned therebetween andI having its opposite ends beveled, a shaft journaled in said block, a skid extending longitudinally of the trackway and having an end portion fixed to the shaft, and means for imparting upward swinging movement to the skid.

5. In combination with the rails of a trackway, a block positioned therebetween, a shaft journaled in said block, a skid extending longitudinally of the trackway and having an end portion fixed to the shaft, and means for imparting upward swinging movement to the skid.

In testimony whereof Ihereunto aflx my signature in the resence of two witnesses.

CHARLES ALTER WATKINS.

Witnesses: y

MURRAY WEBTHEISER, WILLIAM J. SMITH. 

